baber/WOPTO huggingface dataset:
Patent GB-511563-A (GB)
Title: Improvements in electromagnetic relays
IPC: H01H51/04
Filed: 1938-09-30
Abstract: 511,563. Automatic exchange systems. TELEFONAKTIEBOLAGET L. M. ERICSSON. Sept. 30, 1938, No. 28495. Convention date, Nov. 27, 1937. [Class 40 (iv)] [Also in Group XXXVII] In a two-step relay particularly for use in telephone circuits as a combined line and cutoff relay wherein the successive energization of two windings A, B causes an armature 11 to move to its fully attracted position in two steps, movement from rest to the first step causes the engagement of contact springs 5, 7, movement from first step to second step causes the shifting of a latching member 2, return movement from the second step to the first causes the separation of contacts 5, 7 and movement back to rest restores all parts to their original position. In the form shown in Fig. 1, the armature 11 engages a projection 10 on the spring 5 causing the spring 5 to engage the spring 7. During the second step the springs 5 and 7 move up together and the latch 2 under the action of a spring 4 moves to a vertical position in which a portion 8 comes beneath a projection 8. During the first half of the return movement therefore, when the contact 5 is allowed to move down, the contact 7 is retained in its uppermost position. During the'last half of the return movement, a projection 9 moves the latch 2 back to its original position. There are numerous modifications described but in all of them circuit is made during the first step and broken during the first portion of the return movement. Other contact springs are actuated simultaneously. Fig. 4 shows a subscriber's line circuit. Upon receipt of an incoming call winding A will be energized closing contact 5 and energizing a relay C which then starts the call finders over the contact 30. Owing to the high resistance of C, winding B cannot operate the relay through its second step until the calling line has been found whereupon relay moves through its second step and opens contacts 31, 32, 33. If the connection is then released while the receiver is still removed or if there is a permanent loop, winding B will be de-energized but A will remain energized, the armature being now in its intermediate position with the contact 5 open. This ensures that no other call can be initiated.
Patent GB-666114-A (GB)
Title: Improvements in automatic fire alarm installations
IPC: G08B17/06
Filed: 1949-11-08
Abstract: 666,114. Fire alarm systems. ABBEY, A. (Automatiskt Brandalarm Aktiebolag). Nov. 8, 1949. No. 28619/49. Class 118 (i). An electric alarm installation comprises a number of switches connected into an alarm loop comprising one or more current. circuits each fed with current from a separate source and each circuit comprising a number of sections connected in series, so that on failure of current in any circuit its sections are changed over by associated relay contacts so that they are connected in parallel each in series with a resistor, and lamps which indicate the section which has caused the current failure are connected in parallel with each section of the current circuit. The Figure shows a fire alarm comprising A and B circuits which are laid physically adjacent to each other each of which comprises the series. connection of two sections I and II containing thermo-switches 71A, T1B and T2A, T2B, respectively. Normally the sections I and II are connected in series across batteries A and B respectively and relays FRA, FRB and AR are operated and all the error and alarm lamps and bells are inoperative. If, due to a fault, one contact e.g. T2A breaks, relay FRA releases and the two sections of circuit A are connected in parallel via contacts FRA1, 2, 3. Indicating lamp SL2A lights as the short which is normally across it is broken at T2A thus indicating a fault in section II ; error indicating lamps FLA, FLB and error signal bells FKA, FKB are operated via contacts FRA4, 5. When the fault has been cleared, switch 10 is depressed which causes relay FRA to operate and the sections I and II to be connected in series once more. On the occurrence of a fire say in the vicinity of switches T2A, T2B if it is assumed switch T2A breaks first then the operation as described above occurs followed by the breaking of switch T2B which releases relay FRB and connects the sections of circuit B in parallel. Lamp SL2B lights and relay AR which now has both windings de-energizedreleases. Error lamps FLA, FLB are then extinguished by contacts AR3, 4 and alarm signal lamps ALA, ALB and alarm bells AKA, AKB are operated via contacts AR5, 6. Both batteries A and B are connected in parallel via contacts AR1, 2, 3, 4 to fire-alarm box BS which thus operates. If a leakage to earth occurs at a point in the circuit say at T2B, the positive terminal of battery B is connected to earth via R1B, T1B and T2B, relay FRC operates and lamps FLI, FLA, FLB and bells FKA, FKB are operated. Similarly if the leakage occurs at T2A, relay FRC operates from positive A. battery via R1A, T1A, T2A, relay winding FRC negative B battery and rectifier V. A leakage which occurs between A and B circuits, manifests itself as a connection between +a and +b so relay FRC is energized via its second winding and the sequence as described above follows. If the voltage of either battery falls considerably the corresponding error relay releases and the corresponding error lamp and bell are energized from the other battery.
Patent GB-506165-A (GB)
Title: Improvements in sources of light comprising an electric discharge device and luminescent material adapted to be excited by the discharge therein
IPC: C09K11/68
Filed: 1937-10-20
Abstract: 506,165. Luminescent materials. GENERAL ELECTRIC CO., Ltd., McKEAG, A. H., and RANDALL, J. T. Oct. 20, 1937, No. 28623. [Class 39 (i)] An electrical gas discharge device contains luminescent magnesium tungstate and/or zinc tungstate mixed with free magnesium and/or zinc oxide to prevent discolouration and loss of efficiency of the tungstates. In one method of preparation magnesium or zinc oxide is mixed with tungstic oxide in the proportion of 11 molecules to 10 molecules and the mixture heated in an oxidizing atmosphere at about 1150‹ C. for 1 hour and then ground and sieved. In another method 1 mol. of material produced by the first method is mixed when dry with 0À9 mols. of magnesium oxide and the mixture heated to 400‹ C. for half an hour. In general the proportion of free magnesium and /or zinc oxide is such that if a moles. of W03 are present, there are present ( 1 +x)a mols. of (MgO+ZnO), where x is not less than 00À5. According to the Provisional Specification, material produced from a mixture in the ratio of 1MgO (or ZnO) to 1WO3 is mixed with MgO (orZnO) amounting to about 10 per cent of that already present and heated to about 1000‹ C. in an oxidizing or neutral gas for 1 hour or more. The Provisional Specification also refers to Specification 504,354 and to the use of magnesium-cadmium tungstate and calcium tungstate.
Patent GB-681610-A (GB)
Title: Weaving loom
IPC: D03D37/00
Filed: 1949-11-08
Abstract: 681,610. Looms with stationary weft supplies. ETABLISSEMENTS JABOULEY FRERES. Nov. 8, 1949 [Nov. 8, 1948; April 21, 1949], Nos. 28661/49 and 28662/49. Classes 142(i), 142(ii), 142(iii) and 142(iv) Two arcuate weft inserters, which insert loops of weft, reciprocate simultaneously in the same direction through a vertical shed formed by means of shedding wheels. When one inserter is laying weft, the other inserter is being withdrawn. Weft inserters, operating mechanism. The inserters comprise needles 31, 32 of oblique T section. The weft is threaded through lightening holes 39 to tension the weft. The inserters are mounted on brackets 34, 36 on the edge of a plate 29 secured to a shaft having a reciprocate arcuate movement. This movement is obtained from an endless ribbon which passes round a pulley on the shaft and is connected by rods and gearing to an electric motor. A plain roller and a spring-loaded grooved roller positioned above and below each inserter respectively act as guides. Weft supply. The weft is drawn from stationary cops, through guides 51 near the centre of the plate 29 and out to the inserters. Shedding. A shedding reed 25 has blades 26 each having a central hole 27 to accommodate a warp thread. The shed is formed by wheels 43, 45 mounted on the plate 29 and which move the warp threads which do not pass through the holes 27. Dummy warp threads of rubber are provided on each side of the sheet of warp threads to rotate the wheels. before they reach the actual warp. The blades at the edges of the reed are inclined to the vertical to accommodate the fanwise shape of the warp. Beat-up motion. The weft is laid near the fell by the part 37 of the inserter and a roller 55 moves downwards under the action of a cam and presses the nose of the inserter towards the fell. Lens shedding, selvedges. A selvedge is formed by the edge warp threads 108, 109 being shed leno fashion by reeds 92, 93. The reed 93 is moved by a cam 96 which is rotated by a catch 102 on the plate 29. The catch engages one of a number of pins 101 as the plate 29 rotates. A needle 89, advanced by a cam, engages and temporarily holds the loop of weft 11 at the selvedge.
Patent GB-148086-A (GB)
Title: Improvements in electric switches
IPC: H01H3/26
Filed: 1919-11-19
Abstract: 148,086. Barber, W. E. Nov. 19, 1919. Wireless telegraphy and telephony.-An electromagnetically operated two-way switch for connecting a common aerial to either a transmitter or a receiver comprises a constantly energized high-speed electric motor, the direction of which can be rapidly reversed by changing the direction of the current through its field or armature, the rotor carrying a contact connected to the aerial which engages in the extreme position of its arc of movement with fixed contacts connected either to the transmitter or to the receiver. In the arrangement shown in the Figure, the doublefaced contact 6 on the arm 5 projecting from the rotor is connected to the aerial 7 and engages with the contact 9 connected with the transmitter or with the contact 9 connected to the receiver according to the direction of movement of the armature 1 which depends upon the direction of the current through the series field winding 3, controlled by the Morse key 15. On depressing the key the field of the motor is reversed and the transmitter is connected to the aerial; on releasing it again the receiver is connected. The current in the armature may be reversed instead of that in the field windings. The reversing device may be actuated automatically by the current in the microphone of a telephone set so as to connect the aerial to the transmitter while speaking.
Patent GB-1237043-A (GB)
Title: Writing device
IPC: B43K7/10
Filed: 1969-06-06
Abstract: 1,237,043. Reservoir pens. SOC. LE FOYER. 6 June, 1969 [18 Feb., 1969; 2 April, 1969], No. 28681/69. Heading B6P. [Also in Division A4] A felt nib marking instrument is provided with an interchangeable tip member 60 having a split nib or a ball point (Fig. 8). A bore 72 in the rear of the feed-bar 67 co-operates with the tip of the felt nib and has one or more capillary grooves extending between the bore 72 and the underside of the nib. In (Fig. 8), the axial passage in the ball head contains a stem 125 of synthetic sponge having a high coefficient of swelling and which extends between the tip of the felt nib and the rear of the ball.
Patent GB-261427-A (GB)
Title: An improved water-proof and dust-proof sack or like container for conveying granular, dusty and brittle materials
IPC: B65D33/02
Filed: 1926-11-15
Abstract: 261,427. Felten & Guilleaume Carlswerk Akt.-Ges. Nov. 14, 1925, [Convention date]. Sacks and like bags; materials, special, for bags.- Sacks &c. for conveying granular, dusty. and brittle materials in bulk directly from the place of production to the consumer in one and the same packing container, are made .ot water- and dust-proof material c such as rubber or gummed material, and are surrounded by a network &c. d of hemp, wire &c. The bags are furnished with linings which are acid- and lye-proof and are provided with closable filling apertures a and loops e by which they may be suspended during filling or transport. Similar openings may be provided in the bottoms of the bags for emptying them, or the bags may be suspended by loops c<1> for this purpose.
Patent GB-1439222-A (GB)
Title: Slot-type die extrusion apparatus
IPC: B29C48/07
Filed: 1973-06-18
Abstract: 1439222 Extrusion calender H-ULRICH BREDEMEYER [trading as PAUL TROESTER MASCHINENFABRIK] 18 June 1973 [19 June 1972] 28807/73 Heading B5A The extrusion die outlet of a screw extruder 1, 2 delivering plastics or rubber into the adjustable nip of a sheet calender 6, is defined between die parts 3, 4, one 4 of which is fixed between the stands 5 of the calender, and the other 3 of which is fixed to the extruder for horizontal displacement, by hydraulic means away from the calender to facilitate cleaning, The die parts are clamped together, at the calender, by means acting, at least at spaced intervals across the width of the outlet, against a beam 7 extending between the stands 5, and which means may be pneumatically, electrically, mechanically or, as in the described embodiment hydraulically actuated. In the Fig. 2, embodiment, the means comprise a plurality of hydraulic rams 8 which may apply greater pressure at the edges, than towards the middle of the outlet. Alternatively, the means may comprise a plurality of wedges which are carried by the part 3 and are horizontally displaceable between the beam 7 and part 3, either each by a hydraulic ram, Fig. 3 (not shown), or Fig. 5 (not shown), all by the hydraulic means which displaces the extruder away from the calender with the wedges mounted for adjustment axially of the extruder. In the Fig. 4 embodiment, the clamping is effected by a hydraulic cushion 11 carried by the beam 7 and which extends across the width of the outlet and is narrower at the edges at which a lower clamping pressure is applied than at the middle.
Patent GB-666687-A (GB)
Title: Improved clutch particularly suitable for high speed stop-start telegraph systems
IPC: H04L13/04
Filed: 1947-10-29
Abstract: 666,687. Friction clutches. TELETYPE CORPORATION. Oct. 29, 1947 [Nov. 1, 1946], No. 28875/47. Class 80 (ii). The driven portion of a one-revolution frictionclutch between a driving drum 12, fast on a shaft 11, and a driven freely-mounted selector cam sleeve 33 of a telegraph receiver, comprises four spaced friction-shoes 17, 18, 19, 21 forming part of a two-legged frame 16 which is expanded to clutch the surrounding driving drum 12 by a floating clutch-lever 27, having inturned lugs, one, 28, of which fulcrums in a notch 29 in one leg of the frame 16, whilst the other, 30, bears on the other leg at 31, to spread the legs when the lever 27 is released to pivot about the notch 29 under the influence of a tension spring 44 anchored between the lever 27 and a part 41 of the driven assembly. The clutch-shoe frame 16 may, as shown, be flexible, or it may be in twc rigid parts held together by a spring (Fig. 6, not shown). The clutch-lever 27 acts with a force-multiplying action and the surfaces of the friction-shoes 17 &c. are inclined, to result in wedging engagement with the inner surface of the driving drum 12 and the transmission of multiplied engaging forces between the clutchsurfaces 17 &c. through the legs of the frame 16. The final driven member 41 is keyed at 42 to the driven selector cam-sleeve 33, and the clutchframe 16 drives it through a plate 36, having an inturned lug 37 engaging a notch 38 in the frame 16, and axial screws 39 adjustably engaging arcuate slots in the final driven member 41 to permit relative circumferential adjustment to take up wear. Initially, with the driving drum 12 rotating anticlockwise, Fig. 2, the clutch-lever 27 is held in the inoperative position by a lug 51 on a lever 52 rocking on a fixed pivot 47. Momentary deenergization of a fixed magnet 56, permits a spring 53 to raise the lever 52, releasing the clutch-lever 27, which is then rocked anti-clockwise by its spring 44 and is latched in the clutchengaged position by a lug 61 on the lever 27 riding into a recess 62 in a spring-loaded latch 63 rocking at 64 on the final driven member 41. Towards the end of a revolution, the latch 63 strikes the lug 51 of the lever 52, releasing the clutch-lever 27 which is itself subsequently rocked clockwise to a clutch-released position by abutment on the lug 51. A second spring- loaded lever 46 falls in behind a projection 49 on the final driven member 41, preventing rebound.
Patent GB-974642-A (GB)
Title: Improvements in or relating to multiple rotary switches
IPC: H01H19/58
Filed: 1962-07-27
Abstract: 974,642. Mechanical switches, without quick action. SIEMENS & HALSKE A.G. July 27, 1962 [July 28, 1961], No. 28889/62. Heading H2B. A multiple rotary switch assembly comprises a plurality of insulating housing bodies 14, each recessed to accommodate a rotatable disc 15 of resin-bonded paper bearing conducting portions, e.g. in the form of a printed circuit 27, a common operating spindle 26 rotatable relative to said bodies 14 and fixedly connected with each disc 15, and a pair of spring contact arms 16, 17, with their free ends 19 bearing on the disc surfaces to perform switching functions when the discs are rotated. Extensions 18 of arms 16, 17 are located in openings in the bodies 14, and each pair of arms is sandwiched between adjacent bodies when nuts 23 are tightened on the rods 22 before cementing the bodies together. Spindle 26 is connected with spindle 2 which extends into an arrester housing 1 separated from the bodies 14 by a cover plate 8. A spring-pressed pin 3 on spindle 2 locates in openings 10 in a fixed drum ring 5 to define the switching positions. A stop pin 12 on the spindle 2 engages one or other of two stops 6<SP>1</SP> carried by two adjustably fixed toothed stop rings to limit the range of rotary movement of the spindle 2. Markings 29 on the end of spindle 2 indicate its position, while an extension to the spindle is attachable if required. Soldering tags 20 extend from the arms 16, 17, for engagement with a printed circuit board (Fig. 2, not shown).
Patent GB-424697-A (GB)
Title: Improvements in or relating to ventilators for moving vehicles
IPC: B61D27/00
Filed: 1933-10-19
Abstract: 424,697. Ventilators for vehicles. LYNES, L., 75, Lennard Road, Penge, London, and MAUNSELL, R. E. L., Northbrooke, Ashford, Kent. Oct. 19, 1933, No. 28947. [Class 137] A ventilation opening in a vehicle, provided for example by opening a window, is fitted externally with a vane 10 which is so shaped that its inner face near the leading edge 18 is flared outwardly and its outer face 19 near the trailing edge is also flared outwardly, but to a greater extent than the part near the leading edge. In Fig. 1 the vane is shown associated with a window pane 11 vertically slidable in a frame 13, and may extend for the full height of the window opening or partly down the opening. The widths of the opening 14, the vane 10, and the opening 15 are in the proportions of 1, 2 and 3. Air is deflected into the vehicle by the leading edge, flows round the inside face of the vane and is extracted by the trailing portion, the vitiated air being constantly replaced. The vane may be duplicated in the case of a railway vehicle travelling in either direction. In Fig. 3, the vane is formed of a number of vertical slats 27 hinged together, and engaging tracks 28 along which the slats are moved to give the vane the formation required for the direction of travel. In Fig. 13, the vane is constituted by a pillar 54 outwardly flared at 18, the trailing part being formed by a sheet 58 of glass or other material secured to the window sill 60 of the rear window. By adjusting the front sliding window 55, an opening 56 of the required width may be provided, an opening 57 being similarly made to the rear of the pillar 54.
Patent GB-736844-A (GB)
Title: Improvements in the manufacture of magnetic dust cores
IPC: H01F1/24
Filed: 1953-10-20
Abstract: 736,844. Magnetic dust structures. SKILLMAN & CO., PTY., Ltd., T. S. Oct. 20, 1953 [Nov. 7, 1952], No. 28984/53. Class 38 (2). A magnetic dust core is made by depositing between the particles of a magnetic alloy powder containing iron and nickel, colloidal silica derived by hydrolysis of a silicon ester. A mixture of strong aqueous ammonia and ethyl alcohol is stirred into the metal powder, a mixture of "condensed" ethyl silicate and ethyl alcohol then being added. The mix is warmed to dryness, stirring being continued throughout. The dried powder is heated at 900‹ for one hour in nickel crucibles in air-tight iron pots. The process may be repeated with the resultant powder whereby more silica is deposited. The final powder may be compressed to shape and annealed at 600‹ C. for one hour in an air-tight metal pipe with an inner copper sleeve. The cores may be skimmed in a lathe and soaked in lacquer.
Patent GB-285564-A (GB)
Title: Improved process for the extraction of petroleum products from bituminous material
IPC: C10G1/00
Filed: 1926-11-17
Abstract: 285,564. Dvorkoroitz, P. Nov. 17, 1926, Mineral and tar oils, extracting.-Bituminous material such as coal is heated to distil off a. part of the organic matter, and a solvent such as petroleum or gas tar is then added in the form of a liquid or vapour, whereby the remaining organic matter is dissolved and the yield of organic matter increased.
Patent GB-1526390-A (GB)
Title: Method of purifying a hydrogenated gas containing acid gases
IPC: C01B3/52
Filed: 1977-07-11
Abstract: 1526390 Purifying acid gases; hydrogen; sulphur COMPAGNIE FRANCAISE DE RAFFINAGE 11 July 1977 [12 July 1976] 29075/77 Heading C1A A gas containing at least 30% of hydrogen and carbon monoxide and H 2 S has the CO and H 2 S removed in two stages, the CO being removed either before of after the H 2 S by conventional catalytic or solvent methods; while the H 2 S is removed by reaction with sulphur dioxide, to form sulphur, said reaction being performed in a solvent for S0 2  and H 2 S.
Patent GB-272765-A (GB)
Title: Heat indicator pertaining to internal combustion engines
IPC: G01K5/62
Filed: 1926-11-19
Abstract: 272,765. Miller & Co., Ltd., F. W., Miller, F. W., and Miller, F. Nov. 19, 1926. Thermometers.-Means intended more particularly for indicating the temperature of an aircooled motor-cycle engine comprises a heat-sensitive device in the form of a bimetallic strip which is mounted upon or adjacent to the engine cylinder and is connected to a visible indicator. The strip 2 is fixed at one end within a casing 1 adapted for insertion between the cooling fins of the cylinder 15, the free end of the strip being connected by a link 9 to one end of a pivoted pointer 6, the other end 14 of which moves over a suitably-marked scale 12. The casing is attached to the cylinder by a strap 16 having screw-threaded ends engaged by sleeve nuts 17. The indicator may be remote from the heat-sensitive device, e.g. on the handle bar of a motor cycle, in which case it is actuated by a flexible cable.